Automobile-radiator.



H. P. SMITH & L. E. HOOKER.

AUTOMOBILE RADIATOR.

APPLIOATION FILED AUG. 21, 1908.

942,677. Patented Dc. 7, 1909.

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I! llllllllll WITNESSES fil 7&5 .lXl/E/VTORa M41, M

- ATTORNEY H. P; SMITH & L. E. HUOKER.

AUTOMOBILE RADIATOR.

APPLICATION IIPED AUG. 21, 1908.

Paiented Dec.7,1909.

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INVENTORS ATTORNEY UNITED sTA HAROLD 1. SMITH AND LESLIE E. HOOKER, OF PAWTUCKET, RHODE ISLAND.

AUTOMOBILE-RADIATOR.

- Specification of Letters Patent.

Patented Dec. "5, 1909.

Application filed August 21, 1908. Serial No. 449,737.

To all whom it may concern:

Be it known that we, HAROLD P. SMITH and'LEsLIE E. HOO ER, both citizens of the United States, residing at Pawtucket, in the county of Providence and State of Rhode Island, have invented certain new and useful Improvements in Automobile-Radiators, of which the following is a specification.

Our invention relates to fluid-cooling ap-.

paratus, and is more particularly designed as an improvement in radiators, such as are in common use in motor vehicles, to cool the water which circulates in the jacket surrounding the cylinders.

.The object of our invention is to provide a construction whereby some of the difficulties, heretofore encountered, in maintaining such radiators in efficient condition, will be obviated.

Our invention is illustrated in the accompanying drawing, in which, 4

Figure 1 is a front elevation, one-half in section, of aradiator constructed according to our invention,l ig. 2 is a cross-section of the same, taken on line l2 of Fig. 1, and Fig. 3 is -a similar view to Fig. 2, but on a larger scale, the central portion of the radiator being broken away. r

.In these figures, 1 represents thev casing, which surrounds the honeycomb of tubes 2. Said casing may be U-shaped in cross-section and preferably made in two halves,

bolted together at 3 and 4C. The casing is provided with integral tubular pipe-connections at 5 and 6, for the ingress and egress of the water from and to the cylinderq'acket, and with an integral inlet opening 7, all supporting fixtures also being integral, for the supply of water.

The honeycomb 2 consists of a large number of open; ended tubes 9 of thin metal, the ends 10 of which are expanded into square form, as shown, .and secured together to form headers.- The tubes themselves may be' circular, or any other shape'in cross-section and their ends ma be hexagonal instead of square, the latter orm being shown for convenience in illustration. Instead of the ends being expanded, square or hexagonal collars may be shrunk, brazed or soldered on, or the tubes ma or straight vertical tubes, the essential feature being that the tubes, with headers or butt plates, form a single unit which contains the cooling fluid and permits a free circulation of theair. This unit is secured be secured in head-sheets,

or suspended within the casing by a U- shaped rubber lining'll, which fits closely within said casing and may be secured thereto, around the opening 7 at the top thereof, by a strip of metal 12 and screws 13, and at the openings 5 and 6 by flanged bushings 14 and 15, inserted from inside, or other devices to serve the same purpose. The sides of this rubber lining overlap the ends of the outermost row of tubes and are perforated to admit the bolts 16, which pass through said tubes and clamp the sidesof the lining thereto.

For the sake of stability, washers consisting of continuous metal strips 17 are placed between the rubber and the outermost rows of tubes, and strips 17 between the rubber and the heads of the bolts 16; the strips 17 are secured to the ends of the tubes by solderin or brazing. The unit is thus supporte yieldingly and is protected against shocks, which would tend to impair the tube-joints, but as the whole weight, of the unit would come upon the rubber. lining, which might not be capable of supporting the same permanently, we provide a'further yielding support for the unit, in the sha e of a. pneumatic tube 18, lying within't e casing underneath the unit and also passing up around the sides thereof. This tube preferably varies in diameter, being largest at the bottom where the main weight comes, and smaller along the sides where it has merely to cushion the lateral shocks. Furthermore we reduce the diameter of the tube materially in the center of the radiator underneath the honeycomb, as shown at 19, in order to leave as much water space as possi'ble and not interfere with the free circulation of the water, and also at the top, as shown at 20, on both sides for the same purpose and to cause all the cooling fluid to pass through the honeycomb unit. The reduced end 20 of the tube or both of them, is provided with valve and cap 21, bywhich the tube may be inflated.

The essence of our invention is the yielding support and cushion located between the honeycomb andfthe -radiator casing and, believing' this to be absolutely novel, we do not ,wish to be limited to the details or dimensions of the construction illustrated, but to be protected as bro'adly'as expressed in the followingclaimsz- 1.. Aradiator ofthe class described,comprising ,a' plurality of nested tubes, :1 surrounding casing and, yielding supporting means between said tubes and easing.

2.. A radiator of the class described, com

prising a U-shaped outer'easing, a -U-shaped rubber lining within said casing and a'plurali'ty of nested tubes secured to and supported by said lining.

3. A radiator of the classj'described; eom- I prising a surrounding easing, a lurality of nested tubes within said ca's'ing 'e astic means secured to both said casing and said nest of tubes and additional yielding meansinterposed between said casing and tubes.

4; A radiator of the class deseribedmomprising a" U-shaped casing, a plurality of nested tubes within said casing, a U-shaped liningof elastic material secured to said casing and to saidtubes and a pneumatic support interposed between said tubes and bottom and sides of said casing.

'lngtestlmony whereof we aflix our signatures, in presence of two witnesses. 

